anthropic.php
2 years ago
core.php
2 years ago
factory.php
2 years ago
google.php
2 years ago
huggingface.php
2 years ago
openai.php
2 years ago
openrouter.php
2 years ago
anthropic.php
302 lines
| 1 | <?php |
| 2 | |
| 3 | class Meow_MWAI_Engines_Anthropic extends Meow_MWAI_Engines_OpenAI |
| 4 | { |
| 5 | |
| 6 | // Streaming |
| 7 | protected $streamInTokens = null; |
| 8 | protected $streamOutTokens = null; |
| 9 | |
| 10 | public function __construct( $core, $env ) |
| 11 | { |
| 12 | parent::__construct( $core, $env ); |
| 13 | } |
| 14 | |
| 15 | protected function set_environment() { |
| 16 | $env = $this->env; |
| 17 | $this->apiKey = $env['apikey']; |
| 18 | } |
| 19 | |
| 20 | protected function build_url( $query, $endpoint = null ) { |
| 21 | $endpoint = apply_filters( 'mwai_anthropic_endpoint', 'https://api.anthropic.com/v1', $this->env ); |
| 22 | if ( $query instanceof Meow_MWAI_Query_Text ) { |
| 23 | $url = trailingslashit( $endpoint ) . 'messages'; |
| 24 | } |
| 25 | else { |
| 26 | throw new Exception( 'AI Engine: Unsupported query type.' ); |
| 27 | } |
| 28 | return $url; |
| 29 | } |
| 30 | |
| 31 | protected function build_headers( $query ) { |
| 32 | parent::build_headers( $query ); |
| 33 | $headers = array( |
| 34 | 'Content-Type' => 'application/json', |
| 35 | 'x-api-key' => $this->apiKey, |
| 36 | 'anthropic-version' => '2023-06-01', |
| 37 | 'User-Agent' => 'AI Engine', |
| 38 | ); |
| 39 | return $headers; |
| 40 | } |
| 41 | |
| 42 | protected function build_messages( $query ) { |
| 43 | $messages = []; |
| 44 | |
| 45 | // Then, if any, we need to add the 'messages', they are already formatted. |
| 46 | foreach ( $query->messages as $message ) { |
| 47 | $messages[] = $message; |
| 48 | } |
| 49 | |
| 50 | // If the first message is not a 'user' role, we remove it. |
| 51 | if ( !empty( $messages ) && $messages[0]['role'] !== 'user' ) { |
| 52 | array_shift( $messages ); |
| 53 | } |
| 54 | |
| 55 | // Finally, we need to add the message |
| 56 | // If there is a file (image), we need to sent the data (not the URL, as it's not supported by Anthropic yet). |
| 57 | $fileUrl = $query->get_file_url(); |
| 58 | if ( !empty( $fileUrl ) ) { |
| 59 | $messages[] = [ |
| 60 | 'role' => 'user', |
| 61 | 'content' => [ |
| 62 | [ |
| 63 | "type" => "text", |
| 64 | "text" => $query->get_message() |
| 65 | ], |
| 66 | [ |
| 67 | "type" => "image", |
| 68 | "source" => [ |
| 69 | "type" => "base64", |
| 70 | "media_type" => "image/jpeg", |
| 71 | "data" => $query->get_file_data() |
| 72 | ] |
| 73 | ] |
| 74 | ] |
| 75 | ]; |
| 76 | } |
| 77 | else { |
| 78 | $messages[] = [ 'role' => 'user', 'content' => $query->get_message() ]; |
| 79 | } |
| 80 | |
| 81 | return $messages; |
| 82 | } |
| 83 | |
| 84 | protected function build_body( $query, $streamCallback = null, $extra = null ) { |
| 85 | if ( $query instanceof Meow_MWAI_Query_Text ) { |
| 86 | $body = array( |
| 87 | "model" => $query->model, |
| 88 | "max_tokens" => $query->maxTokens, |
| 89 | "temperature" => $query->temperature, |
| 90 | "stream" => !is_null( $streamCallback ), |
| 91 | ); |
| 92 | |
| 93 | if ( !empty( $query->stop ) ) { |
| 94 | $body['stop'] = $query->stop; |
| 95 | } |
| 96 | |
| 97 | // First, we need to add the first message (the instructions). |
| 98 | if ( !empty( $query->instructions ) ) { |
| 99 | $body['system'] = $query->instructions; |
| 100 | } |
| 101 | |
| 102 | // If there is a context, we need to add it. |
| 103 | if ( !empty( $query->context ) ) { |
| 104 | if ( empty( $body['system'] ) ) { |
| 105 | $body['system'] = ""; |
| 106 | } |
| 107 | $body['system'] = empty( $body['system'] ) ? '' : $body['system'] . "\n\n"; |
| 108 | $body['system'] = $body['system'] . "Context:\n\n" . $query->context; |
| 109 | } |
| 110 | |
| 111 | $body['messages'] = $this->build_messages( $query ); |
| 112 | return $body; |
| 113 | } |
| 114 | else { |
| 115 | throw new Exception( 'AI Engine: Unsupported query type.' ); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | protected function stream_data_handler( $json ) { |
| 120 | $content = null; |
| 121 | |
| 122 | // Get the data |
| 123 | if ( isset( $json['type'] ) && $json['type'] === 'message_start' ) { |
| 124 | $usage = $json['message']['usage']; |
| 125 | $this->streamInTokens = $usage['input_tokens']; |
| 126 | $this->inModel = $json['message']['model']; |
| 127 | $this->inId = $json['message']['id']; |
| 128 | } |
| 129 | else if ( isset( $json['type'] ) && ( $json['type'] === 'delta' || $json['type'] === 'content_block_delta' ) ) { |
| 130 | $content = $json['delta']['text']; |
| 131 | } |
| 132 | else if ( isset( $json['type'] ) && $json['type'] === 'message_delta' ) { |
| 133 | $usage = $json['usage']; |
| 134 | $this->streamOutTokens = $usage['output_tokens']; |
| 135 | } |
| 136 | else if ( isset( $json['type'] ) && $json['type'] === 'error' ) { |
| 137 | $error = $json['error']; |
| 138 | $message = $error['message']; |
| 139 | throw new Exception( $message ); |
| 140 | } |
| 141 | |
| 142 | // Avoid some endings |
| 143 | $endings = [ "<|im_end|>", "</s>" ]; |
| 144 | if ( in_array( $content, $endings ) ) { |
| 145 | $content = null; |
| 146 | } |
| 147 | |
| 148 | return ( $content === '0' || !empty( $content ) ) ? $content : null; |
| 149 | } |
| 150 | |
| 151 | public function run_completion_query( $query, $streamCallback = null ) : Meow_MWAI_Reply { |
| 152 | if ( !is_null( $streamCallback ) ) { |
| 153 | $this->streamCallback = $streamCallback; |
| 154 | add_action( 'http_api_curl', [ $this, 'stream_handler' ], 10, 3 ); |
| 155 | } |
| 156 | |
| 157 | $body = $this->build_body( $query, $streamCallback ); |
| 158 | $url = $this->build_url( $query ); |
| 159 | $headers = $this->build_headers( $query ); |
| 160 | $options = $this->build_options( $headers, $body ); |
| 161 | |
| 162 | try { |
| 163 | $res = $this->run_query( $url, $options, $streamCallback ); |
| 164 | $reply = new Meow_MWAI_Reply( $query ); |
| 165 | |
| 166 | $returned_id = null; |
| 167 | $returned_model = $this->inModel; |
| 168 | $returned_choices = []; |
| 169 | |
| 170 | if ( !is_null( $streamCallback ) ) { |
| 171 | // Streamed data |
| 172 | if ( empty( $this->streamContent ) ) { |
| 173 | $json = json_decode( $this->streamBuffer, true ); |
| 174 | if ( isset( $json['error']['message'] ) ) { |
| 175 | throw new Exception( $json['error']['message'] ); |
| 176 | } |
| 177 | } |
| 178 | $returned_id = $this->inId; |
| 179 | $returned_model = $this->inModel ? $this->inModel : $query->model; |
| 180 | $returned_in_tokens = !is_null( $this->streamInTokens ) ? $this->streamInTokens : null; |
| 181 | $returned_out_tokens = !is_null( $this->streamOutTokens ) ? $this->streamOutTokens : null; |
| 182 | $returned_choices = [ |
| 183 | [ |
| 184 | 'message' => [ |
| 185 | 'content' => $this->streamContent, |
| 186 | //'function_call' => $this->streamFunctionCall |
| 187 | ] |
| 188 | ] |
| 189 | ]; |
| 190 | } |
| 191 | else { |
| 192 | // Regular data |
| 193 | $data = $res['data']; |
| 194 | if ( empty( $data ) ) { |
| 195 | throw new Exception( 'No content received (res is null).' ); |
| 196 | } |
| 197 | if ( !$data['model'] ) { |
| 198 | error_log( print_r( $data, 1 ) ); |
| 199 | throw new Exception( 'Invalid response (no model information).' ); |
| 200 | } |
| 201 | $returned_id = $data['id']; |
| 202 | $returned_model = $data['model']; |
| 203 | $returned_in_tokens = isset( $data['usage']['input_tokens'] ) ? $data['usage']['input_tokens'] : null; |
| 204 | $returned_out_tokens = isset( $data['usage']['output_tokens'] ) ? $data['usage']['output_tokens'] : null; |
| 205 | // There is only one choice with |
| 206 | $returned_choices = [ [ |
| 207 | 'message' => [ |
| 208 | 'content' => $data['content'][0]['text'], |
| 209 | //'function_call' => $data['choices'][0]['delta']['function_call'] |
| 210 | ] |
| 211 | ] ]; |
| 212 | } |
| 213 | |
| 214 | $reply->set_choices( $returned_choices ); |
| 215 | if ( !empty( $returned_id ) ) { |
| 216 | $reply->set_id( $returned_id ); |
| 217 | } |
| 218 | |
| 219 | // Handle tokens. |
| 220 | $this->handle_tokens_usage( $reply, $query, $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 221 | |
| 222 | return $reply; |
| 223 | } |
| 224 | catch ( Exception $e ) { |
| 225 | error_log( $e->getMessage() ); |
| 226 | $service = $this->get_service_name(); |
| 227 | $message = "From $service: " . $e->getMessage(); |
| 228 | throw new Exception( $message ); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | protected function get_service_name() { |
| 233 | return "Anthropic"; |
| 234 | } |
| 235 | |
| 236 | public function get_models() { |
| 237 | return apply_filters( 'mwai_openai_models', MWAI_ANTHROPIC_MODELS ); |
| 238 | } |
| 239 | |
| 240 | static public function get_models_static() { |
| 241 | return MWAI_ANTHROPIC_MODELS; |
| 242 | } |
| 243 | |
| 244 | public function handle_tokens_usage( $reply, $query, $returned_model, $returned_in_tokens, $returned_out_tokens ) { |
| 245 | $returned_in_tokens = !is_null( $returned_in_tokens ) ? $returned_in_tokens : $reply->get_in_tokens( $query ); |
| 246 | $returned_out_tokens = !is_null( $returned_out_tokens ) ? $returned_out_tokens : $reply->get_out_tokens(); |
| 247 | |
| 248 | // This is how to retrieve the exact number of tokens used with Anthropic. |
| 249 | // However, it doesn't work with streaming and it slows the request. |
| 250 | |
| 251 | if ( !empty( $reply->id ) ) { |
| 252 | $url = 'https://anthropic.ai/api/v1/generation?id=' . $reply->id; |
| 253 | try { |
| 254 | |
| 255 | // This is the CURL way |
| 256 | // $ch = curl_init(); |
| 257 | // curl_setopt( $ch, CURLOPT_URL, $url ); |
| 258 | // curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true ); |
| 259 | // curl_setopt( $ch, CURLOPT_HTTPHEADER, [ 'Authorization: Bearer ' . $this->apiKey ] ); |
| 260 | // curl_setopt( $ch, CURLOPT_USERAGENT, 'AI Engine' ); |
| 261 | // $res = curl_exec( $ch ); |
| 262 | // curl_close( $ch ); |
| 263 | // $res = json_decode( $res, true ); |
| 264 | |
| 265 | // This is the WordPress way |
| 266 | // It currently doesn't work with Anthropic (for mysterious reasons) |
| 267 | // $res = wp_remote_get( $url, array( |
| 268 | // 'headers' => array( |
| 269 | // 'Authorization' => 'Bearer ' . $this->apiKey, |
| 270 | // 'User-Agent' => 'AI Engine', |
| 271 | // 'Accept' => 'application/json', |
| 272 | // ), |
| 273 | // 'sslverify' => false, |
| 274 | // 'user-agent' => 'AI Engine', |
| 275 | // 'timeout' => 30, |
| 276 | // 'blocking' => false, |
| 277 | // ) ); |
| 278 | |
| 279 | if ( isset( $res['data'] ) ) { |
| 280 | $data = $res['data']; |
| 281 | $returned_model = $data['model']; |
| 282 | $returned_in_tokens = $data['tokens_prompt']; |
| 283 | $returned_out_tokens = $data['tokens_completion']; |
| 284 | $price = $res['usage']; |
| 285 | $usage = $this->core->record_tokens_usage( $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 286 | $reply->set_usage( $usage ); |
| 287 | return; |
| 288 | } |
| 289 | } |
| 290 | catch ( Exception $e ) { |
| 291 | error_log( $e->getMessage() ); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | $usage = $this->core->record_tokens_usage( $returned_model, $returned_in_tokens, $returned_out_tokens ); |
| 296 | $reply->set_usage( $usage ); |
| 297 | } |
| 298 | |
| 299 | public function get_price( Meow_MWAI_Query_Base $query, Meow_MWAI_Reply $reply ) { |
| 300 | return parent::get_price( $query, $reply ); |
| 301 | } |
| 302 | } |